fetal atrial fibrillation
Fetal atrial fibrillation is a type of fetal tachyarrhythmia and usually has an atrial rate of 400 beats per minute and a completely irregular ventricular rhythm.
Radiographic features
Antenatal ultrasound - echocardiography
The atrial contractions are usually too faint to be detected by M Mode ultrasound. An irregular ventricular rate may be detected.
Complications
- development of hydrops fetalis